LG 47LH41 Service Manual Download Page 21 | Manualshive

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LGE Internal Use Only

Copyright LG Electronics. Inc. All right reserved.
Only for training and service purposes

C

2009

- 21 -

5. RGB Video

Check input signal format.

Is it supported?

OK

Check RGB Cable connectors for

damage.

OK

Check JK1201

NO

Replace Jack.

OK

Check EDID

NO

Re-download EDID data.

OK

Check signal R/G/B/H/V-Sync

R1234/1235/1236/1233/1232

NO

Check other set.

If no problem, check signal

line

OK

Check Mstar LVDS output

NO

Replace Mstar(IC100)

or Main board

6. AV Video

Check input signal format.

Is it supported?

OK

Check AV Cable for damage or

open connector.

OK

Check JK1206,JK1202

NO

Replace Jack.

OK

Check Mstar LVDS output

NO

Replace Mstar(IC100)

or Main board

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Summary of Contents for 47LH41

Page 1: ...E SERVICING THE CHASSIS READ THE SAFETY PRECAUTIONS IN THIS MANUAL CHASSIS LA92G MODEL 47LH41 47LH41 UE North Latin America http aic lgservice com Europe Africa http eic lgservice com Asia Oceania http biz lgservice com Internal Use Only ...

Page 2: ...ht LG Electronics Inc All right reserved Only for training and service purposes C 2009 2 CONTENTS CONTENTS 2 PRODUCT SAFETY 3 SPECIFICATION 6 ADJUSTMENT INSTRUCTION 15 TROUBLE SHOOTING 19 BLOCK DIAGRAM 26 EXPLODED VIEW 29 SVC SHEET ...

Page 3: ...ld Check Antenna Cold Check With the instrument AC plug removed from AC source connect an electrical jumper across the two AC plug prongs Place the AC switch in the on position connect one lead of ohm meter to the AC plug prongs tied together and touch other ohm meter lead in turn to each exposed metallic parts such as antenna terminals phone jacks etc If the exposed metallic part has a return pat...

Page 4: ...e on your body by touching a known earth ground Alternatively obtain and wear a commercially available discharging wrist strap device which should be removed to prevent potential shock reasons prior to applying power to the unit under test 2 After removing an electrical assembly equipped with ES devices place the assembly on a conductive surface such as aluminum foil to prevent electrostatic charg...

Page 5: ... the solder joints of the two original leads If they are not shiny reheat them and if necessary apply additional solder Fuse and Conventional Resistor Removal Replacement 1 Clip each fuse or resistor lead at top of the circuit board hollow stake 2 Securely crimp the leads of replacement component around notch at stake top 3 Solder the connections CAUTION Maintain original spacing between the repla...

Page 6: ... 4 Specification and performance of each parts are followed each drawing and specification by part number in accordance with BOM 5 The receiver must be operated for about 5 minutes prior to the adjustment 3 Test method 1 Performance LGE TV test method followed 2 Demanded other specification Safety UL CSA IEC specification CE EMC FCC ICES IEC specification CE No Item Specification Remark 1 Display ...

Page 7: ... displayable as much as possible LCD module 2 Measuring instrument CA 210 or a sort of Color Analyzer 3 Pattern Generator VG 828 or a sort of digital pattern generator displayable Full White 1 25 White Window pattern 4 Measure condition Test pattern in center 1 5 H 1 5 V of Window Pattern white pattern in non impressed condition SET condition Contrast Brightness Level 100 Environment condition Dar...

Page 8: ... test condition impress 30 30 dots White Window Pattern signal Measure center peak brightness degree Lw of white window Impress black Raster signal as contrast ratio measurement signal Measure black brightness degree Lb of PDP central Calculate the following numerical formula Contrast ratio Lw Lb If it does not use Prior measurement use generally simple test measurement The Correct measure specifi...

Page 9: ... 1920 1080 33 75 30 000 74 25 HDTV 1080P 14 1920 1080 33 71 29 97 74 176 HDTV 1080P No Specification Remark Resolution H freq kHz V freq Hz Pixel Clock MHz 1 640 350 31 468 70 09 25 17 EGA 2 720 400 31 469 70 08 28 32 DOS 3 640 480 31 469 59 94 25 17 VESA VGA 4 640 480 37 861 72 80 31 50 VESA VGA 5 640 480 37 500 75 00 31 50 VESA VGA 6 800 600 35 156 56 25 36 00 VESA SVGA 7 800 600 37 879 60 31 40...

Page 10: ... 01 00 01 01 01 01 10 00 11 01 03 18 73 41 96 0A CF 74 A3 57 4C B0 23 20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40 30 01 01 01 01 01 01 66 21 50 B0 51 00 1B 30 40 70 40 36 00 C4 8E 21 00 00 1A 02 3A 80 18 71 38 2D 40 50 58 2C 45 00 C4 8E 21 00 00 1E 00 00 00 FD 00 30 60 58 1F 64 11 00 0A 20 20 20 20 20 20 00 00 00 FC 70 00 4C 47 20 54 56 0A 20 20 20 20 20 20 20 01 F6 EDID Block 1 table 0 1 2...

Page 11: ...8 60 023 75 02 78 75 VESA XGA 13 1280 768 47 776 59 870 79 5 CVT WXGA 14 1360 768 47 712 60 015 85 50 VESA WXGA 15 1280 1024 63 981 60 020 108 00 VESA SXGA 16 1280 1024 79 976 75 025 135 VESA SXGA 17 1600 1200 75 00 60 00 162 VESA UXGA 18 1920 1080 7 5 60 148 5 HDTV 1080P 8 2 DTV Mode No Resolution H freq kHz V freq Hz Pixel clock MHz Proposed Remark 1 720 480 31 47 60 27 027 SDTV 480P 2 720 480 3...

Page 12: ... 00 00 00 00 27 EDID Block 0 table 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 HDMI II C S 8A17 EDID Block 0 table 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40 30 01 01 01 ...

Page 13: ...18 8C 0A 50 D0 8A 20 E0 2D 10 10 3E 96 00 13 8E 21 00 00 18 60 26 36 80 A0 70 38 1F 40 30 20 25 00 C4 8E 21 00 70 00 1A 00 00 00 00 00 00 00 00 00 00 00 00 00 07 HDMI IV C S 8AF7 EDID Block 0 table 0 1 2 3 4 5 6 7 8 9 A B C D E F 0 00 FF FF FF FF FF FF 00 1E 6D 01 00 01 01 01 01 10 00 11 01 03 80 73 41 96 0A CF 74 A3 57 4C B0 23 20 09 48 4C AF CF 00 31 40 45 40 61 40 81 80 A9 40 30 01 01 01 01 01 ...

Page 14: ...ter Voltage 21 6 24 26 4 V Logic Voltage Vcc 4 8 5 5 3 V Sound Amp Vcc 15 0 24 0 20 0 26 V PSU 24V Lips 20V Tuner 5V 4 75 5 0 5 25 V VSC Vcc 12V 11 0 12 0 13 0 V 5V 4 5 5 0 5 5 V No operation 0 0 5 1 V Inside Temp Under 20deg 3 AC Power Shut Down Voltage 90 264 V Wide Range PSU 11 Mechanical specification No Item Content Unit 1 Protrusion Satisfy appearance inspection LG 51 G2 2001 2 Appearance qu...

Page 15: ...nent1 adjustment Adjust 1024 768 RGB adjustment Above adjustment items can be also performed in Final Assembly if needed Both Board level and Final assembly adjustment items can be check using In Start Menu 1 Adjust Check 3 2 Final assembly adjustment EDID DDC download White Balance adjustment RS 232C functionality check Factory Option setting per destination Ship out mode setting In Stop 3 3 Etc ...

Page 16: ...t then Check Signal Status message displayed These messages will be displayed just a second 5 1 3 3 ADC 1024 768 RGB PC Set RGB PC 1024 768 mode and 100 Horizontal Color Bar Pattern HozTV31Bar then set TV set to Component1 mode and its screen to NORMAL After get the signal wait more a second and enter the IN START with press In Start key of Service remocon After then select 6 External ADC RGB with...

Page 17: ...Surrounding lighting should be lower than 10 lux Try to isolate adj area into dark surrounding 2 Probe location Color Analyzer CA 210 probe should be within 10cm and perpendicular of the module surface 80 100 B L on should be checked using no signal or Full white Pattern 5 2 6 Reference White Balance adj coordinate and color temperature Luminance Full white 216 Gray Standard color coordinate and t...

Page 18: ...ill lit up and the stopper will allow the pallet to move on to next process 6 2 Checkpoint TEST voltage GND 1 5KV min at 100mA Signal 3KV min at 100mA Test time 1 second Test point GND test Power cord GND signal cable metal GND Internal pressure TEST POWER CORD GND LIVE NEUTRAL LEAKAGE CURRENT At 0 5mArms 7 USB S W Download option 7 1 Overview USB download allows fast SW upgrade in SVC areas or du...

Page 19: ...Re download software OK Replace Mstar IC100 or Main board OK Check Q706 Output Level 5V NO Replace Q706 OK Check Multi Voltage P700 13pin 12V 18pin 20V NO Replace Power board OK Check inverter control error P700 22pin Low P700 20pin high NO Check Power board or Module OK Check IC704 output voltage 3 3V NO Replace IC704 OK Check Mstar LVDS output R1109 R1110 R1111 R1120 NO Replace Mstar IC100 or Ma...

Page 20: ...Check IC1004 LGDT Output AR1070 AR1071 NO Replace IC1004 OK Check Mstar LVDS output R1109 R1110 R1111 R1120 NO Replace Mstar IC100 or Main board 3 Analog TV Video Check RF Cable OK Check Tuner 5V Power TU1001 4Pin Check IC1002 OK Check CVBS signal TU1001 19 Pin Replace Tuner OK Check Mstar LVDS output Replace Mstar IC100 or Main board NO NO NO 4 Component Video Check input signal format Is it supp...

Page 21: ... NO Replace Jack OK Check EDID NO Re download EDID data OK Check signal R G B H V Sync R1234 1235 1236 1233 1232 NO Check other set If no problem check signal line OK Check Mstar LVDS output NO Replace Mstar IC100 or Main board 6 AV Video Check input signal format Is it supported OK Check AV Cable for damage or open connector OK Check JK1206 JK1202 NO Replace Jack OK Check Mstar LVDS output NO Rep...

Page 22: ...d OK Check HDMI Cable for damage or open connector OK Check JK500 501 502 503 NO Replace Jack OK Check EDID NO Re download EDID data OK Check HDCP key NVRAM IC105 power I2C Signal pin 5 6 NO Replace the defective IC OK Check HDMI Signal NO Check other set If no problem check signal line NO Replace Main board OK Check Mstar LVDS output NO Replace Mstar IC100 or Main board ...

Page 23: ...ggle the menu OK Check Mstar AUDIO_MASTER_CLK R603 NO Replace Mstar IC100 or Main board OK Check Mstar I2S Output R604 R605 R606 NO Check signal line Or replace IC100 OK Check IC600 Power 20V 3 3V 1 8V NO Check Regulaor IC601 IC704 OK Check Output Signal P600 1 2 3 4 PIN NO Replace NTP Audio AMP IC600 OK Check Connector P600 NO Replace connector if found to be damaged OK Check speaker resistance a...

Page 24: ... LGDT3305 Output AR1070 AR1071 NO Replace IC1004 OK Check Output Signal P600 1 2 3 4 PIN NO Replace NTP3100L Audio AMP IC600 OK Check Connector P600 NO Replace connector if found to be damaged OK Check speaker resistance and connector damage NO Replace speaker 10 Analog TV Audio Check Tuner 5V Power TU1001 4Pin NO Check IC1002 Check IC1005 19 22 NO Bad Tuner Replace Tuner OK Check SIF buffer signa...

Page 25: ...t 7V NO Detach the P1400 P1401 FFC Cable Check Vcom NO Replace IC1301 OK OK Replace LCD Module Check URSA2 mini LVDS output P1400 P1401 NO Replace LCD Module 12 No Video for 37LH40 UA Check 12V DC Voltage L1300 NO Check Q706 pin4 2V DC voltage NO Check PANEL_CTRL LOW 0V OK OK OK Replace Q706 Check Q704 Q705 Check 3 3V 16V 26V DC Voltage R1327 R1371 R1378 NO Replace IC1300 or Main borad OK Check IC...

Page 26: ...DA SCL_5V JTAG CLK TDI TDO MS RST HDMI3 Addr 0 1 C S Audio L R Audio L R for RGB HDMI 2 SPDIF RX TX RX TX JACK PACK JACK PACK at REAR at REAR JACK PACK JACK PACK at SIDE at SIDE SCL SDA_3 3V TR Buffer VSB Demod X tal Reset Switch Reset IC 12MHz TS In 0 7 TS_clk SOP Val EEPROM Data 16 31 DDR2 512Mbit AV Component 1 Y Pb Pr L R CVBS Y C L R Component 2 Y Pb Pr L R Digital Audio Coaxial USB2 0 SCL SD...

Page 27: ...3 EEPROM_SDA EEPROM_SCL SDA_2 SCL_2 Msta r 22 ohm 0 ohm 4 7K ohm MEMC_SDA MEMC_SCL 0 ohm 22 ohm 3 3V NTP 3100L TDA9996 TDA9996_SDA TDA9996_SCL 0 ohm 0 ohm 4 7K ohm SDA_SUB AMP SCL_SUB AMP 0 ohm 100 ohm 3 3V_HDMI_ST OPT TDV H101F 22 ohm 22 ohm 4 7K ohm 5V_TU 5V_General 4 7K ohm AT24C512 33 ohm 22 ohm 4 7K ohm 3 3V 5V_General OPT 33 ohm 3 3K ohm 3 3V 33 ohm 33 ohm 33 ohm 33oh m 33 ohm 33 ohm 3 3V_ST...

Page 28: ...hz FRC_SDA FRC_SCL SDA0 SCL0 FRC_ODT EEPROM FRC_RESET FRC_MCLK FRC_MCLKZ WP_EEPROM_FRC OPT_P OPT_N GOE GSC GSP_R GSP SOE POL H_CONV LED_LCM_FRC VLCD_LCM 12V VDD_LCM 16V VGL 5V VGH VGHM DPM FLK VCOMROUT P_VCOM VCOM_FB VLCD_LCM_ OUT 12V VCC_LCM 3 3V VCOMLOUT P_VCOM P_Gamma FFC Cabl e LEFT VDD_LCM_PG VGH_M 24V VCOMR_OP VCOML_OP DPM SOE_L SOE_R LTD_R L LED GMA1 18 Mini LVDS OUT URSA 2 T Con block non ...

Page 29: ...y electrical and mechanical parts in this chassis have special safety related characteristics These parts are identified by in the Schematic Diagram and EXPLODED VIEW It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X RADIATION Shock Fire or other Hazards Do not modify the original design without permission of manu...

Page 30: ...4 2 NC_2 22 NC_13 21 NC_12 1 NC_1 20 NC_11 19 WP 18 WE 3 3K R131 10K R247 0 1 u F C2124 SIDEAV_DET 004 AA7 COMP2_Y 004 Y15 0 R233 0 1 u F C176 1K R156 DSUB_B 004 R23 22 R160 AV_CVBS_DET 004 K12 0 1 u F C100 100 R2122 MEMC_RXO2 008 N28 0 1 u F C2130 0 R142 BLM18PG121SN1D L109 47 R124 PC_L_IN 004 AO21 0 R232 100 R242 OPT 0 R187 0 0 4 7 u F C124 0 1 u F 16V C162 0 1 u F C177 EEPROM_SDA 001 H5 001 AB2...

Page 31: ...C5M03200L ZENER DSUB_HSYNC 001 D29 470K R1246 5V_ST 0 1 u F C1233 47pF 50V C1252 10K R1251 100 R1281 10K R1262 5 6V OPT D1225 ADMC5M03200L 5 6V D1221 ADMC5M03200L ZENER 10K R1248 BLM18PG121SN1D L1209 30V D1245 ADUC30S03010L ZENER 0 R1276 1000pF 50V C1237 5 6V D1220 ADMC5M03200L ZENER 75 R1243 SIDEAV_CVBS_IN 001 D26 OPT C1218 100pF C1219 0 1 u F 50V C660 5 6V D1231 ADMC5M03200L ZENER PEJ024 01 JK12...

Page 32: ... HPD3 3 6K R518 OPT 5V_HDMI_2 001 Y20 005 W27 005 AK15 1 8V_AMP 47K R561 0 R591 D1 _HDMI2 D2 _HDMI2 CK _HDMI4 005 AH20 5V_HDMI_1 0 R569 CK _HDMI1 005 Z12 D1 _HDMI1 005 Z11 47K OPT R1505 0 1 u F 16V C508 0 R584 3 3V_ST 0 R504 0 R581 0 R512 DDC_SCL_2 005 Y25 005 AM12 D2 _HDMI3 0 1 u F 16V C501 OPT DDC_SCL_3 0 1 u F 16V C503 0 R586 0 1 u F 16V C500 OPT D1 _HDMI4 HPD1 005 Z13 47K OPT R1500 0 1 u F C52...

Page 33: ...W26 DA 8580 EAP38319001 L606 2S 1S 1F 2F MLB 201209 0120P N2 L604 0 4 7 u F 50V C634 33pF 50V C612 100 R601 2SC3052 Q600 E B C 0 R600 POWER_DET 1N4148W 100V OPT D601 100pF 50V C604 1000pF 50V C631 0 0 1 u F 50V C615 24V_AMP 1000pF 50V C632 120 ohm L611 3 3 R621 5 6 R614 33pF 50V C609 22000pF 50V C618 4 7K R620 100 R606 100 R608 0 1 u F 50V C638 24V 0 R603 100 R604 4 7K R617 4 7K R618 100 R605 10uF...

Page 34: ...51 BLM18PG121SN1D L702 100 OPT R716 10K R718 4 7 u F 6 3V OPT C762 NR8040T3R6N 3 6uH L710 ERROR_OUT 001 AB20 SC4215ISTRT IC701 3 VIN 2 EN 4 NC_2 1 NC_1 5 NC_3 6 VO 7 ADJ 8 GND 6 8K OPT R715 1uF 16V C788 10K OPT R721 1 10W 10 1 R768 PWM_DIM 001 AF12 22uF 16V OPT C730 47 R737 10uF C742 OPT 0 1 u F 50V C735 0 1 u F 16V OPT C707 5V_ST 5V_GENERAL 22uF 16V C714 2SC3875S OPT Q708 E B C 5V_ST 3 3V_ST 10K ...

Page 35: ...DATA 7 25 TPCLK 26 TPSOP 27 NIRQ 28 SDA 29 VDD33_2 30 SCL 31 VSS_1 32 VDD_2 33 VSS_2 34 VSS33_2 35 PLLAVDD 36 PLLAVSS 37 NRST 38 OPM 39 VDD33_3 40 NC_2 41 VSS33_3 42 XTALI 43 XTALO 44 VSS_3 45 XM 46 VDD_3 47 VSSDAD10 48 VCCAAD10A 100pF 50V C1017 2 2 u F 16V C1000 5 1K R1068 OPT 330nH L1002 2 2K R1004 OPT OPT R1066 47K R1074 5V_TU 36pF 50V C1046 OPT R1075 0 1 u F 50V C1007 SIFMO 001 W30 12V 0 1 u F...

Page 36: ...A10 B22 A_DDR2_A11 A12 A_DDR2_A12 A24 A_DDR2_BA0 C24 A_DDR2_BA1 B24 A_DDR2_BA2 D24 A_DDR2_MCLK B14 A_DDR2_MCLK A14 A_DDR2_CKE D23 A_DDR2_ODT D14 A_DDR2_RAS D13 A_DDR2_CAS D12 A_DDR2_WE D22 A_DDR2_DQS0 B18 A_DDR2_DQS1 C17 A_DDR2_DQM0 C18 A_DDR2_DQM1 A19 A_DDR2_DQSB0 A18 A_DDR2_DQSB1 B17 A_DDR2_DQ0 B15 A_DDR2_DQ1 A21 A_DDR2_DQ2 A15 A_DDR2_DQ3 B21 A_DDR2_DQ4 C21 A_DDR2_DQ5 C14 A_DDR2_DQ6 C20 A_DDR2_D...

Page 37: ... 100 R1119 LMLV2N 13 G18 0 1 u F C1104 100 R1109 RMLV3N 13 M18 10pF 50V C1159 0 1 u F C1118 0 OPT R1133 MEMC_RXE1 1 R39 120 ohm L1100 RMCLKN 13 M18 0 1 u F C1150 LMLV1N 13 G18 LMLV5P 13 G19 MEMC_RXO1 1 R36 MEMC_RXO2 1 R36 33pF C1158 1 26V_MEMC 33 R1107 12MHz X1100 120 ohm L1106 0 1 u F C1137 33 R1128 LMLV7N 13 G20 56 R1139 10K R1102 TJC2508 4A P1100 1 2 3 4 0 1 u F C1140 URSA_CASZ 12 S16 12 W16 LM...

Page 38: ... A11 K9 ODT A2 NC1 N2 A3 P2 A7 H8 VSSQ1 F7 LDQS A8 UDQS R2 A12 L8 CS E2 NC2 E7 VSSQ5 D8 VSSQ6 D2 VSSQ7 A7 VSSQ8 B8 VSSQ9 B2 VSSQ10 P9 VSS1 N1 VSS2 J 3 VSS3 E3 VSS4 A3 VSS5 G9 VDDQ1 G7 VDDQ2 G3 VDDQ3 G1 VDDQ4 E9 VDDQ5 C9 VDDQ6 C7 VDDQ7 C3 VDDQ8 C1 VDDQ9 A9 VDDQ10 R1 VDD1 M9 VDD2 J 9 VDD3 E1 VDD4 A1 VDD5 B9 DQ15 B1 DQ14 D9 DQ13 D1 DQ12 D3 DQ11 D7 DQ10 C2 DQ9 C8 DQ8 F9 DQ7 F1 DQ6 H9 DQ5 H1 DQ4 H3 DQ3...

Page 39: ...21 22000pF 50V C1436 GMA13 G16 M15 10uF 10V C1418 GMA4 G23 O8 LMLV6P 11 AG26 LMLV3P 11 AG28 LMLV8P 11 AJ25 0 1 u F 16V C1406 LMLV1P 11 AG28 H_CONV 11 AJ22 M21 GSP 11 AJ24 G21 LTD_R M23 GMA17 G15 Y9 VCOML_OP AK4 1K R1442 LMLV6N 11 AG26 0 0 1 u F 25V C1403 10uF 25V C1453 GMA2 M23 O9 GMA5 G23 O8 0 1 u F 16V C1427 680 R1411 680 R1412 330K 1 R1408 180 1 R1404 0 4 7 u F 50V C1412 150K 1 R1414 22K 1 R141...

Page 40: ...1204 1 2 3 4 5 180 R1218 0 LU30 R1214 5V_USB_1 0 0 1 I 2 100uF 16V C1209 BG2012B080TF L1203 CB3216PA501E L1201 0 1 u F 16V C1208 0 1 u F 16V C1200 1000pF 50V C1205 CB3216PA501E L1200 0 1 u F 16V C1202 IR 001 AB22 004 AD4 100 R1231 OPT 10K R1228 USB_OCD LED_MOVING LED_R 001 AR32 1000pF 50V C1201 0 1 u F C1203 ADMC5M03200L_AMODIODE 5 6V D1202 ZENER KEY1 001 AB23 0 R1230 3 3V_ST LED_B 12507WS 12L P12...

Page 41: ...Jan 2009 Printed in Korea P NO MFL58436004 ...

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